author | truebrain |
Thu, 12 Jun 2008 21:18:09 +0000 | |
branch | noai |
changeset 10944 | 588393239ac6 |
parent 9869 | 6404afe43575 |
permissions | -rw-r--r-- |
9723 | 1 |
/* $Id$ */ |
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/** |
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* @file slope_type.h Definitions of a slope. |
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* This file defines the enumeration and helper functions for handling |
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* the slope info of a tile. |
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*/ |
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#ifndef SLOPE_TYPE_H |
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#define SLOPE_TYPE_H |
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#include "core/enum_type.hpp" |
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/** |
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* Enumeration of tile corners |
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*/ |
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enum Corner { |
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CORNER_W = 0, |
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CORNER_S = 1, |
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CORNER_E = 2, |
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CORNER_N = 3, |
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CORNER_END, |
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CORNER_INVALID = 0xFF |
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}; |
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/** |
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* Enumeration for the slope-type. |
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* |
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* This enumeration use the chars N,E,S,W corresponding the |
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* direction north, east, south and west. The top corner of a tile |
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* is the north-part of the tile. The whole slope is encoded with |
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* 5 bits, 4 bits for each corner and 1 bit for a steep-flag. |
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* |
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* For halftile slopes an extra 3 bits are used to represent this |
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* properly; 1 bit for a halftile-flag and 2 bits to encode which |
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* extra side (corner) is leveled when the slope of the first 5 |
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* bits is applied. This means that there can only be one leveled |
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* slope for steep slopes, which is logical because two leveled |
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* slopes would mean that it is not a steep slope as halftile |
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* slopes only span one height level. |
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*/ |
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enum Slope { |
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SLOPE_FLAT = 0x00, ///< a flat tile |
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SLOPE_W = 0x01, ///< the west corner of the tile is raised |
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SLOPE_S = 0x02, ///< the south corner of the tile is raised |
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SLOPE_E = 0x04, ///< the east corner of the tile is raised |
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SLOPE_N = 0x08, ///< the north corner of the tile is raised |
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SLOPE_STEEP = 0x10, ///< indicates the slope is steep |
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SLOPE_NW = SLOPE_N | SLOPE_W, ///< north and west corner are raised |
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SLOPE_SW = SLOPE_S | SLOPE_W, ///< south and west corner are raised |
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SLOPE_SE = SLOPE_S | SLOPE_E, ///< south and east corner are raised |
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SLOPE_NE = SLOPE_N | SLOPE_E, ///< north and east corner are raised |
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SLOPE_EW = SLOPE_E | SLOPE_W, ///< east and west corner are raised |
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SLOPE_NS = SLOPE_N | SLOPE_S, ///< north and south corner are raised |
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SLOPE_ELEVATED = SLOPE_N | SLOPE_E | SLOPE_S | SLOPE_W, ///< all corner are raised, similar to SLOPE_FLAT |
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SLOPE_NWS = SLOPE_N | SLOPE_W | SLOPE_S, ///< north, west and south corner are raised |
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SLOPE_WSE = SLOPE_W | SLOPE_S | SLOPE_E, ///< west, south and east corner are raised |
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SLOPE_SEN = SLOPE_S | SLOPE_E | SLOPE_N, ///< south, east and north corner are raised |
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SLOPE_ENW = SLOPE_E | SLOPE_N | SLOPE_W, ///< east, north and west corner are raised |
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SLOPE_STEEP_W = SLOPE_STEEP | SLOPE_NWS, ///< a steep slope falling to east (from west) |
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SLOPE_STEEP_S = SLOPE_STEEP | SLOPE_WSE, ///< a steep slope falling to north (from south) |
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SLOPE_STEEP_E = SLOPE_STEEP | SLOPE_SEN, ///< a steep slope falling to west (from east) |
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SLOPE_STEEP_N = SLOPE_STEEP | SLOPE_ENW, ///< a steep slope falling to south (from north) |
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SLOPE_HALFTILE = 0x20, ///< one halftile is leveled (non continuous slope) |
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SLOPE_HALFTILE_MASK = 0xE0, ///< three bits used for halftile slopes |
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SLOPE_HALFTILE_W = SLOPE_HALFTILE | (CORNER_W << 6), ///< the west halftile is leveled (non continuous slope) |
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SLOPE_HALFTILE_S = SLOPE_HALFTILE | (CORNER_S << 6), ///< the south halftile is leveled (non continuous slope) |
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SLOPE_HALFTILE_E = SLOPE_HALFTILE | (CORNER_E << 6), ///< the east halftile is leveled (non continuous slope) |
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SLOPE_HALFTILE_N = SLOPE_HALFTILE | (CORNER_N << 6), ///< the north halftile is leveled (non continuous slope) |
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}; |
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9869
6404afe43575
(svn r12597) [NoAI] -Sync: with trunk r12501:12596.
rubidium
parents:
9723
diff
changeset
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DECLARE_ENUM_AS_BIT_SET(Slope) |
9723 | 74 |
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/** |
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* Enumeration for Foundations. |
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*/ |
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enum Foundation { |
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FOUNDATION_NONE, ///< The tile has no foundation, the slope remains unchanged. |
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FOUNDATION_LEVELED, ///< The tile is leveled up to a flat slope. |
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FOUNDATION_INCLINED_X, ///< The tile has an along X-axis inclined foundation. |
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FOUNDATION_INCLINED_Y, ///< The tile has an along Y-axis inclined foundation. |
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FOUNDATION_STEEP_LOWER, ///< The tile has a steep slope. The lowest corner is raised by a foundation to allow building railroad on the lower halftile. |
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/* Halftile foundations */ |
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FOUNDATION_STEEP_BOTH, ///< The tile has a steep slope. The lowest corner is raised by a foundation and the upper halftile is leveled. |
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FOUNDATION_HALFTILE_W, ///< Level west halftile non-continuously. |
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FOUNDATION_HALFTILE_S, ///< Level south halftile non-continuously. |
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FOUNDATION_HALFTILE_E, ///< Level east halftile non-continuously. |
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FOUNDATION_HALFTILE_N, ///< Level north halftile non-continuously. |
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/* Special anti-zig-zag foundations for single horizontal/vertical track */ |
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FOUNDATION_RAIL_W, ///< Foundation for TRACK_BIT_LEFT, but not a leveled foundation. |
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FOUNDATION_RAIL_S, ///< Foundation for TRACK_BIT_LOWER, but not a leveled foundation. |
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FOUNDATION_RAIL_E, ///< Foundation for TRACK_BIT_RIGHT, but not a leveled foundation. |
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FOUNDATION_RAIL_N, ///< Foundation for TRACK_BIT_UPPER, but not a leveled foundation. |
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FOUNDATION_INVALID = 0xFF ///< Used inside "rail_cmd.cpp" to indicate invalid slope/track combination. |
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}; |
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#endif /* SLOPE_TYPE_H */ |